The only thing on your list that made me laugh was the BoatUS membership.
I recommend you check the engine oil and coolant before starting it up, same for transmission oil. As for fuel, that's easy to come by. What you need are spare fuel filters.
My own boats have never been inspected as thoroughly as the list accumulated on this thread. Well, not all at once anyway.
Fuel filters, and a wrench and raw water impeller and belt.
I see what you mean about the list. Where do you stop.
As as far as your boat goes that is the point. On your boat that you have been on for months or years you just know what is going on. At least you have a chance.